Silva Gu's eyes dart back and forth across miles of tall grassland, scouring it for signs of life in the darkness.

He speaks in less than a whisper as we try to find a spot to hide in the fields. Behind us, the vast metropolis of Beijing has yet to wake. As we wait, we hear only our own breath.

And then, as the sky starts to lighten ahead of sunrise, we hear footsteps. The poachers are here.

Each year, tens of thousands of birds are caught in nets across China for the pet trade or for meat. The black market for these delicate creatures has flourished, with a single Siberian rubythroat fetching nearly 2,000 yuan (£210; $280).

Silva, a committed conservationist, patrols the outskirts of Beijing in an effort to thwart these illegal activities. Armed with passion and experience, he has dedicated his life to the protection of these songbirds.

China is home to over 1,500 bird species, making it a critical habitat for migratory birds. Upsurge in poaching is a direct threat to their survival as urbanization continues to encroach on their natural habitats.

Gerald Gu's journey began in his childhood, where he roamed the grasslands of Beijing, but rapid urban development led to habitat loss and a declining bird population. His encounters with poachers have galvanized him to establish the Beijing Migratory Bird Squad, which aims to combat wildlife crime through community engagement and collaboration with local authorities.

Despite the challenges he faces—including threats and dwindling volunteer support—Silva remains committed, utilizing satellite technology to track poaching patterns and identify potential habitats for songbirds.

"I want to protect them on this Earth controlled by humans," he expresses fervently. Silva's resolve shines through as he continues nightly patrols, dreaming of a future where the melodies of songbirds fill the skies of Beijing once again.